64 HINTS ON SOILS AND FERTILIZERS 
list for such information. There is probably 
no bulletin information available on all types 
of soils and their relation to particular crops, 
outside of this little booklet, and a few cloth- 
bound books of a much higher price. 
In conclusion, I hope that the knowledge set 
forth in these pages will prove helpful to all 
those who are willing to follow the policies laid 
down, as this information comprises the ac¬ 
cumulated results of extensive experimental 
and practical work. 
